cifs: make dnotify thread experimental code
Now that tasks sleeping in wait_for_response will time out on their own,
we're not reliant on the dnotify thread to do this. Mark it as
experimental code for now.
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 7f87066..061a1dc 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -66,7 +66,9 @@
extern struct task_struct *oplockThread; /* remove sparse warning */
struct task_struct *oplockThread = NULL;
/* extern struct task_struct * dnotifyThread; remove sparse warning */
+#ifdef CONFIG_CIFS_EXPERIMENTAL
static struct task_struct *dnotifyThread = NULL;
+#endif
static const struct super_operations cifs_super_ops;
unsigned int CIFSMaxBufSize = CIFS_MAX_MSGSIZE;
module_param(CIFSMaxBufSize, int, 0);
@@ -1049,6 +1051,7 @@
return 0;
}
+#ifdef CONFIG_CIFS_EXPERIMENTAL
static int cifs_dnotify_thread(void *dummyarg)
{
struct list_head *tmp;
@@ -1074,6 +1077,7 @@
return 0;
}
+#endif
static int __init
init_cifs(void)
@@ -1151,16 +1155,20 @@
goto out_unregister_dfs_key_type;
}
+#ifdef CONFIG_CIFS_EXPERIMENTAL
dnotifyThread = kthread_run(cifs_dnotify_thread, NULL, "cifsdnotifyd");
if (IS_ERR(dnotifyThread)) {
rc = PTR_ERR(dnotifyThread);
cERROR(1, ("error %d create dnotify thread", rc));
goto out_stop_oplock_thread;
}
+#endif
return 0;
+#ifdef CONFIG_CIFS_EXPERIMENTAL
out_stop_oplock_thread:
+#endif
kthread_stop(oplockThread);
out_unregister_dfs_key_type:
#ifdef CONFIG_CIFS_DFS_UPCALL
@@ -1199,8 +1207,10 @@
cifs_destroy_inodecache();
cifs_destroy_mids();
cifs_destroy_request_bufs();
- kthread_stop(oplockThread);
+#ifdef CONFIG_CIFS_EXPERIMENTAL
kthread_stop(dnotifyThread);
+#endif
+ kthread_stop(oplockThread);
}
MODULE_AUTHOR("Steve French <sfrench@us.ibm.com>");